When they wore it: The 43-year-old "No Doubt" singer sported the design for the premiere of “The Bling Ring" in L.A. on June 4. Meanwhile, the "Diamonds" songstress, 25, debuted the look in December as she performed in Germany on the TV show "Wetten, dass..?"

How they styled it: Mrs. Rossdale rocked it with her signature red lipstick, Giuseppe Zanotti sandals, a wide silver belt, and a black clutch. RiRi kept it simple by adding a less blingy gold belt from Chanel and minimal jewelry.

Judge's scorecard: Only these two ladies could pull this off! While Stefani's belt gives her the advantage, it's hard to find something wrong with Rihanna's look ... if anything, she's a little too conservative for once.